:root {
  --page: #f3f0e8;
  --surface: #fffdf7;
  --ink: #18212b;
  --muted: #6d756f;
  --line: #c9c2b8;
  --accent: #e85d2a;
  --dark: #17202a;
  --display: "Space Grotesk", sans-serif;
  --body: "DM Sans", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--page); color: var(--ink); font: 16px/1.55 var(--body); }
a { color: inherit; }
button, input, textarea { font: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.skip-link { position: absolute; left: 12px; top: -50px; padding: 8px 12px; background: var(--accent); color: white; z-index: 5; }
.skip-link:focus { top: 12px; }
.site-header, main, .site-footer { width: min(1180px, calc(100% - 48px)); margin: auto; }
.site-header { display: flex; justify-content: space-between; align-items: center; padding: 28px 0; border-bottom: 1px solid var(--line); }
.brand { font: 700 18px var(--display); letter-spacing: -.06em; text-decoration: none; }.brand span { color: var(--accent); }
nav { display: flex; gap: 28px; font-size: 14px; } nav a { text-decoration: none; }
.hero { min-height: 650px; display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 50px; padding: 80px 0 100px; }
.kicker, .session span { color: var(--muted); font: 600 11px var(--display); letter-spacing: .09em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; } h1, h2 { font-family: var(--display); letter-spacing: -.075em; line-height: .92; } h1 { font-size: clamp(4.4rem, 10vw, 8.5rem); margin: 22px 0 30px; } h1 em { color: var(--accent); font-style: normal; } h2 { font-size: clamp(3rem, 6vw, 5.4rem); margin-bottom: 30px; } h3 { font-family: var(--display); }
.hero-intro { max-width: 440px; font-size: 18px; color: var(--muted); margin-bottom: 30px; }.button { display: inline-flex; justify-content: space-between; align-items: center; gap: 40px; border: 1px solid var(--accent); background: var(--accent); color: white; padding: 13px 16px; text-decoration: none; font-weight: 600; cursor: pointer; }.button:hover { background: var(--dark); border-color: var(--dark); }
.summit-art { position: relative; min-height: 500px; overflow: hidden; }.summit-art svg { position: absolute; width: 70%; right: 3%; top: 19%; transform: rotate(-8deg); }.orbit { position: absolute; border: 2px solid var(--accent); border-radius: 50%; transform: rotate(-25deg); }.orbit-one { width: 85%; height: 35%; top: 32%; left: 4%; }.orbit-two { width: 74%; height: 76%; top: 10%; left: 13%; }.badge { position: absolute; top: 7%; right: 14%; width: 130px; height: 130px; display: grid; place-items: center; border-radius: 50%; background: var(--accent); color: white; transform: rotate(13deg); font: 700 23px/1 var(--display); }.badge b { font-size: 38px; }.ticket { position: absolute; bottom: 7%; left: 3%; display: flex; gap: 19px; padding: 16px 20px; background: var(--dark); color: white; font: 600 12px var(--display); letter-spacing: .08em; transform: rotate(-6deg); }
.section { padding: 105px 0; border-top: 1px solid var(--line); display: grid; grid-template-columns: .75fr 1.25fr; gap: 70px; }.section-heading h2 { margin-bottom: 0; }.lead { max-width: 650px; font-size: 23px; }.fact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 55px; }.fact-grid article { border-top: 1px solid var(--line); padding-top: 16px; }.fact-grid strong { font: 700 42px var(--display); color: var(--accent); }.fact-grid h3 { margin: 10px 0 3px; }.fact-grid p, .notes-grid p, .speaker-card small { color: var(--muted); }
.filters { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: -30px; }.filter { border: 1px solid var(--line); padding: 9px 13px; background: none; cursor: pointer; }.filter.active, .filter:hover { background: var(--dark); color: white; border-color: var(--dark); }.schedule { grid-column: 1 / -1; }.session { display: grid; grid-template-columns: 100px 1fr; gap: 25px; padding: 23px 0; border-bottom: 1px solid var(--line); }.session time { font: 600 20px var(--display); }.session h3 { margin: 8px 0 3px; font-size: 22px; }.session p { margin: 0; color: var(--muted); }.session[hidden] { display: none; }
.speaker-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; }.speaker-card { border: 1px solid var(--line); background: none; text-align: left; padding: 18px; cursor: pointer; }.speaker-card:hover { border-color: var(--accent); }.avatar { width: 75px; height: 75px; display: grid; place-items: center; margin-bottom: 24px; border-radius: 50%; background: var(--dark); color: white; font: 600 20px var(--display); }.avatar-b { background: var(--accent); }.avatar-c { background: var(--muted); }.speaker-card b, .speaker-card small { display: block; }.speaker-card b { font: 600 20px var(--display); }.speaker-detail { grid-column: 2; min-height: 28px; color: var(--muted); margin-top: 22px; }
.notes-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }.notes-grid div { border-top: 1px solid var(--line); padding-top: 17px; }.notes-grid h3 { font-size: 21px; }.rsvp form { max-width: 560px; }.rsvp label { display: grid; gap: 7px; margin-bottom: 18px; font: 600 12px var(--display); text-transform: uppercase; letter-spacing: .05em; }.optional { color: var(--muted); }.rsvp input, .rsvp textarea { border: 1px solid var(--line); padding: 12px; background: var(--surface); color: var(--ink); text-transform: none; }.rsvp .button { width: 100%; }.form-status { color: var(--muted); font-size: 14px; min-height: 24px; }.site-footer { display: flex; justify-content: space-between; padding: 25px 0 40px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
@media (max-width: 760px) { .site-header, main, .site-footer { width: min(100% - 32px, 600px); } nav { gap: 12px; }.hero, .section { grid-template-columns: 1fr; gap: 35px; padding: 70px 0; }.hero { padding-top: 55px; }.summit-art { min-height: 390px; }.section-heading h2 { margin-bottom: 10px; }.fact-grid, .notes-grid, .speaker-grid { grid-template-columns: 1fr; }.speaker-detail { grid-column: 1; }.filters { margin-bottom: 0; }.session { grid-template-columns: 65px 1fr; }.site-footer { gap: 15px; flex-direction: column; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }